Cable tray column hoisting

Cable tray column hoisting involves using hoisting frames or cross arms with suspension rods to securely install cable trays along or around columns, ensuring stability and proper load distribution.

Installation Methods

Cable trays can be installed in layered or combined modes depending on the environment and available space. In column scenarios, the layered installation method is commonly used, where cable trays are mounted at different heights along the column to optimize space and maintain accessibility for maintenance ( ).

Hoisting Accessories

Hoisting Frames

• Suitable for small-sized cable trays.
• Advantages: low cost, simple installation.
• Components: hoisting frame, suspension rod (vertical support), and a five-piece fastening kit.
• Recommended spacing: one hoisting frame per 1.5–2 meters of cable tray ( ).

Cross Arms

• Designed for large or heavy cable trays.
• Provide enhanced stability and easier long-term maintenance.
• Components: two suspension rods and two sets of five-piece kits per arm.
• Recommended spacing: one cross arm per 1.5–2 meters of cable tray ( ).

Suspension Rods

• Also called lead screws.
• Connect the ceiling or column support to the hoisting frame or cross arm.
• Ensure vertical stability and load transfer from the cable tray to the structural support ( ).

Installation Steps

1. Determine Position and Mode: Assess the column layout and decide whether a layered or combined installation is appropriate ( ).
2. Attach Supports: Screw cable tray supports to the designated positions on the trays using insulated tools.
3. Secure to Column: Mount the hoisting frames or cross arms to the column using suspension rods, ensuring proper alignment and spacing.
4. Fasten Cable Trays: Use the five-piece kit to secure the trays to the supports, maintaining stability and load distribution.
5. Check Alignment and Load: Verify that trays are level and that the load is evenly distributed along the column supports.

Best Practices

• Use layered installation for tight column spaces to maximize vertical space.
• Ensure adequate support spacing to prevent sagging or overloading.
• Select hoisting frames for lighter trays and cross arms for heavier trays.
• Always use insulated tools when working near live electrical systems.
• Plan for future maintenance by leaving sufficient clearance around trays. By following these guidelines, cable tray column hoisting can be performed safely and efficiently, ensuring long-term stability and accessibility for electrical installations ( ).